bush and president obama. and his book is now in book stores. six guys, a the lot of presidents, who stands out in your mind. who did you like the most and why did you vote for obama in 2008? >> i had to sneak that in. >> sure. you know, you admire something different about each president and of course, i only got to know some of the latter because i was senior enough to have interaction with them. the day i retired, the ceremony on the day i retired, the elder george bush called me. i'd never met him and he called me as about an hour before the ceremony, just to wish me well and thank me. >> sean: a good man. >> i thought that was an extraordinarily touching move. of course, his son i worked very closely with and i remember when it got difficult, and i cover this in the book, he brought me to ummer of 2005. we were in the middle of the fight in the west which was very difficult in iraq and fighting while we were working hard to get abu assad and hadn't gotten him yet. and brought me in with the national security council and asked me directly, o